The role and performance of the power and pressure relief valve

Pressure relief valve function and performance of the gas pressure relief valve belongs to the guide piston type pressure relief valve. Consists of two parts, the main valve and pilot valve. The main valve is mainly composed of valve seat, the main valve plate, piston, spring and other parts. Pilot valve is mainly composed of valve seat and valve disc, diaphragm, spring, adjusting spring and other parts. By adjusting the adjusting the spring pressure setting outlet pressure, the use of diaphragm sensing outlet pressure changes, through the pilot valve opening and closing drive piston regulate the flow of the main throttle valve parts area, the size of the reduced pressure regulator function. Pressure relief valve is mainly used for gas pipeline, such as air, nitrogen, oxygen, hydrogen gas, liquefied petroleum gas, natural gas, etc. Steam pressure relief valve belongs to the guide piston type pressure relief valve. Consists of two parts, the main valve and pilot valve. The main valve is mainly composed of valve seat, the main valve plate, piston, spring and other parts. Pilot valve is mainly composed of valve seat and valve disc, diaphragm, spring, adjusting spring and other parts. By adjusting the adjusting the spring pressure setting outlet pressure, the use of diaphragm sensing outlet pressure changes, through the pilot valve opening and closing drive piston regulate the flow of the main throttle valve parts area, the size of the reduced pressure regulator function. Main products are mainly used for steam piping, decompression voltage stabilizing role. Spring diaphragm pressure relief valve belongs to a direct action type film spring pressure relief valve. Mainly by the regulating spring, diaphragm, piston, valve seat and valve disc parts. Using the diaphragm sensor downstream pressure directly drive valve disc, complete decompression voltage stabilizing function control of the opening of the valve disc. Spring diaphragm pressure relief valve in urban construction, high-rise buildings in cold and hot water supply system, can replace conventional partition conduit, saving equipment. Can also be in usually hot and cold water pipe network, decompression voltage stabilizing role. The product is smooth voltage regulator, voltage regulator action, suitable for water and non corrosive liquid medium pipeline. Corrugated pipe and pressure relief valve is used in the temperature of the steam under 200 ℃, air, water, no corrosive medium in the pipeline, the medium pressure across the valve body keep constant, need to adapt to the work. Before valve inlet pressure P1 by 1. 0 - 0. After 1 mpa, the relief valve outlet pressure P2 of 0. 4 - 0. 5 mpa, the valve before and after the valve pressure difference is not greater than zero. 6 mpa, also should not be less than zero. 5 mpa, the following description of its principle and structure of 1, imported before the medium pressure valve from the valve disc and valve body into the coelomic cavity sealing ring opening gap make medium pressure flow with the combination of the corrugated pipe boxes, corrugated pipe and extrusion and compression spring from the medium pressure, the valve flap with the displacement of the valve rod, valve disc to the closing of the valve body sealing ring, medium as before, the valve will not be the supplement valve after medium pressure. When the valve after the medium pressure is reduced, corrugated pipe due to adjusting the spring force, make the bellows moire deformation, the valve lever to open the valve disc. The media through the valve body sealing ring supplement valve after pressure is reduced. 2, corrugated pipe and pressure relief valve is the valve body, valve cover, valve disc, valve body seal, valve stem, corrugated pipe, adjusting spring and other parts, body cavity imported assembly seal with the valve disc, valve body and auxiliary spring, auxiliary spring is to keep the valve disc and the valve body sealing ring automatic sealing, export body cavity assembly elastic sealing element ( Corrugated tube) Ensure that after the medium pressure valve leakage and overcome pressure uneven degree of compensation. Screw is to adjust the spring load pressure relief valve working performance. Lever type relief valve is mainly composed of valve body, valve seat and valve disc parts, with double valve seat, the structure of the double cone valve disc. The pressure balance type valve disc, lift control. The regulating mechanism adopts lever type, with DKJ type or other type of Angle travel electric actuators, realize remote control and automatic control. Lever type pressure relief valve are used 0. 6 is more appropriate. Lever type relief valve is mainly used for steam pipe, adjust the pressure. Widely used in cogeneration, textile, printing and dyeing, petrochemical industry, sugar, etc.